iOS 使用 webservice 方法

原文 http://bbs.csdn.net/topics/330170341

#import <UIKit/UIKit.h>

@interface Hello_SOAPViewController : UIViewController

{

        IBOutlet UITextField *nameInput;

        IBOutlet UILabel *greeting;

        NSMutableData *webData;

        NSMutableString *soapResults;

        NSXMLParser *xmlParser;

        BOOL *recordResults;

}

@property(nonatomic, retain) IBOutlet UITextField *nameInput;

@property(nonatomic, retain) IBOutlet UILabel *greeting;

@property(nonatomic, retain) NSMutableData *webData;

@property(nonatomic, retain) NSMutableString *soapResults;

@property(nonatomic, retain) NSXMLParser *xmlParser;

-(IBAction)buttonClick: (id) sender;

@end

#import "Hello_SOAPViewController.h"

@implementation Hello_SOAPViewController

@synthesize greeting, nameInput, webData, soapResults, xmlParser;

-(IBAction)buttonClick:(id)sender

{

        recordResults = FALSE;

        

        NSString *soapMessage = [NSString stringWithFormat:

        @"<?xml version=\"1.0\" encoding=\"utf-8\"?>\n"

        "<soap:Envelope xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\" xmlns:xsd=\"http://www.w3.org/2001/XMLSchema\" xmlns:soap=\"http://schemas.xmlsoap.org/soap/envelope/\">\n"

        "<soap:Body>\n"

"<Hello xmlns=\"http://viium.com/\">\n"

        "<name>%@</name>\n"

"</Hello>\n"

        "</soap:Body>\n"

        "</soap:Envelope>\n", nameInput.text

        ];

        NSLog(soapMessage);

        

        NSURL *url = [NSURL URLWithString:@"http://viium.com/WebService/HelloWorld.asmx"];

        NSMutableURLRequest *theRequest = [NSMutableURLRequest requestWithURL:url];

        NSString *msgLength = [NSString stringWithFormat:@"%d", [soapMessage length]];

        

        [theRequest addValue: @"text/xml; charset=utf-8" forHTTPHeaderField:@"Content-Type"];

        [theRequest addValue: @"http://viium.com/Hello" forHTTPHeaderField:@"SOAPAction"];

        [theRequest addValue: msgLength forHTTPHeaderField:@"Content-Length"];

        [theRequest setHTTPMethod:@"POST"];

        [theRequest setHTTPBody: [soapMessage dataUsingEncoding:NSUTF8StringEncoding]];

        

        NSURLConnection *theConnection = [[NSURLConnection alloc] initWithRequest:theRequest delegate:self];

        

        if( theConnection )

        {

                webData = [[NSMutableData data] retain];

        }

        else

        {

                NSLog(@"theConnection is NULL");

        }

        

        [nameInput resignFirstResponder];

        

}

-(void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response

{

        [webData setLength: 0];

}

-(void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data

{

        [webData appendData:data];

}

-(void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error

{

        NSLog(@"ERROR with theConenction");

        [connection release];

        [webData release];

}

-(void)connectionDidFinishLoading:(NSURLConnection *)connection

{

        NSLog(@"DONE. Received Bytes: %d", [webData length]);

        NSString *theXML = [[NSString alloc] initWithBytes: [webData mutableBytes] length:[webData length] encoding:NSUTF8StringEncoding];

        NSLog(theXML);

        [theXML release];

        

        if( xmlParser )

        {

                [xmlParser release];

        }

        

        xmlParser = [[NSXMLParser alloc] initWithData: webData];

        [xmlParser setDelegate: self];

        [xmlParser setShouldResolveExternalEntities: YES];

        [xmlParser parse];

        

        [connection release];

        [webData release];

}

-(void)parser:(NSXMLParser *)parser didStartElement:(NSString *)elementName namespaceURI:(NSString *) namespaceURI qualifiedName:(NSString *)qName

attributes: (NSDictionary *)attributeDict

{

        if( [elementName isEqualToString:@"HelloResult"])

        {

                if(!soapResults)

                {

                        soapResults = [[NSMutableString alloc] init];

                }

                recordResults = TRUE;

        }

}

-(void)parser:(NSXMLParser *)parser foundCharacters:(NSString *)string

{

        if( recordResults )

        {

                [soapResults appendString: string];

        }

}

-(void)parser:(NSXMLParser *)parser didEndElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName

{

        if( [elementName isEqualToString:@"HelloResult"])

        {

                recordResults = FALSE;

                greeting.text = soapResults;

                [soapResults release];

                soapResults = nil;

        }

}

/*

Implement loadView if you want to create a view hierarchy programmatically

- (void)loadView {

}

*/

/*

Implement viewDidLoad if you need to do additional setup after loading the view.

- (void)viewDidLoad {

        [super viewDidLoad];

}

*/

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation {

        // Return YES for supported orientations

        return (interfaceOrientation == UIInterfaceOrientationPortrait);

}

- (void)didReceiveMemoryWarning {

        [super didReceiveMemoryWarning]; // Releases the view if it doesn't have a superview

        // Release anything that's not essential, such as cached data

}

- (void)dealloc

{

        [xmlParser release];

        [super dealloc];

}

@end